function sayHi() {
    console.log("hi");
}
function test(){
    console.log("test");
}
function sayHello(name,callback) {
    callback(name);
}
var quantity = 100;
/* ex1:
  module.exports = sayHi;
*/
module.exports={
    sayHi,
    quantity,
    count:quantity,
    sayHello
}